i cant do math help

[paper]

11 minutes ago, LoudPacks said:

I mean if you can have decimals in the fraction you can do as follows:

(3/10)^12 = (3^12)/(10^12) = 531441/1000000000000 = (531441/531441)/(1000000000000/531441) = 1/1881676.42

welp i still dont understand the equation. but thank you